Coming from rather bulky DSLRs (e.g. Canon 7D), the Ricoh GR III was a game changer for me.
The camera has a superb image quality while easily fitting in the front pocket of my pants, which allows me to carry it each and every day.
That availability allowed me to take many shots I would have missed with my bulkier cameras as I would have left them at home.
The development presets it brought luckily meet my taste, which allows me to skip development on my computer most of the time (I still shoot RAW and jpeg combined for the other times).
The designers have put much effort in enabling one-handed handling of the camera even in manual mode.
Many current generation smartphones come with capable cameras, though, and I expect many not to see the benefit in this camera for their needs.